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2011 IEEE Symposium on Wireless Technology and Applications (ISWTA)

25-28 Sept. 2011

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  • [Front cover]

    Publication Year: 2011, Page(s): c1
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  • [Title page]

    Publication Year: 2011, Page(s): i
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  • [Copyright notice]

    Publication Year: 2011, Page(s): ii
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  • Contents

    Publication Year: 2011, Page(s): iii
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  • Welcome message

    Publication Year: 2011, Page(s): iv
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  • Organizing committee

    Publication Year: 2011, Page(s): v
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  • List of reviewers

    Publication Year: 2011, Page(s):vi - vii
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  • Technical program overview

    Publication Year: 2011, Page(s):viii - x
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  • Technical program

    Publication Year: 2011, Page(s):xi - xviii
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  • Abstracts [2011 IEEE Symposium on Wireless Technology and Applications (ISWTA)]

    Publication Year: 2011, Page(s):xix - xxx
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    Presents abstracts for the articles comprising the conference proceedings. View full abstract»

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  • Author index

    Publication Year: 2011, Page(s):xxxi - xxxii
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  • Manuscript [breaker page]

    Publication Year: 2011, Page(s): xxxiii
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  • A design of 5.2 GHz CMOS up-conversion mixer with IF input active balun

    Publication Year: 2011, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (425 KB) | HTML iconHTML

    This paper presents a high linearity and low power up-conversion mixer at 5.2 GHz for wireless applications. The design based on Gilbert-cell active double-balanced mixer with integrated on-chip input active balun. Core mixer employs additional parallel capacitors and the degeneration inductors to obtain high linearity. A designed active balun which converts single-ended input to differential sign... View full abstract»

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  • New positive/negative floating inductance simulation using OTA and CCCII

    Publication Year: 2011, Page(s):5 - 8
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    This paper presents a new floating inductance simulator using only one operational transconductance amplifier (OTA), one translinear current conveyor with controlled current gain and one grounded capacitor. Unlike the previously reported floating inductance simulator, the proposed circuit can realize a positive floating inductance simulator and a negative floating inductance simulator without chan... View full abstract»

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  • Second order dual-path coupled line filter

    Publication Year: 2011, Page(s):9 - 12
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    An original filter topology based on dual-path parallel coupled-lines is presented. Two identical coupled-lines are combined in parallel to result in a wideband bandpass response. Two transmission zeros are also resulted thanks to the cancellation effect in the dual-path connection. It is also shown that the use of asymmetrical coupled lines helps in giving more flexibility in obtaining higher cou... View full abstract»

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  • A novel concept for first-pass design of RF Power amplifiers for wireless communications

    Publication Year: 2011, Page(s):13 - 16
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB) | HTML iconHTML

    In this paper, a novel RF circuit design concept, namely, Partitioning Design Approach (PDA) is proposed. In comparison with the conventional RF circuit design approach, it is aimed to accomplish the complex RF circuit design tasks in a straightforward way. As a demonstrator, one class-AB RF power amplifier (PA) was designed at the centre frequency of 2.14 GHz using AlGaAs/GaAs HEMT technology. Fi... View full abstract»

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  • Tuning circuit using varactor diode for tunable bandstop resonator

    Publication Year: 2011, Page(s):17 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB) | HTML iconHTML

    A tuning circuit based on the use of varactor is presented to tune the electrical length of an open-circuited stub. The complete circuit with the choice of components is given in the paper, along with its simulation results. The proposed circuit is realized using microstrip technology on FR4 substrate. The experimental results are found to be of good agreement with the ones obtained from simulatio... View full abstract»

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  • Realization of a compact branch line couple using semi-lumped element

    Publication Year: 2011, Page(s):21 - 23
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    A single band branch line coupler for butler matrix with semi-lumped element has been proposed in this paper. The coupler is designed to operate properly at 5.8 GHz operating frequency. The capacitors with the value of 33 pF and 4.7 pF are realized as suitable values for lumped element components. It is found that the lumped element implementation is capable to greatly influence the size compactne... View full abstract»

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  • Design of third order wideband bandpass filter using dual-path coupled lines

    Publication Year: 2011, Page(s):24 - 26
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (297 KB) | HTML iconHTML

    A novel topology of wideband bandpass filter is proposed. The filter is composed of two identical paths of coupled lines connected in parallel. The overall frequency response of the filter can be adjusted by varying the impedance value of the filter elements leading to possibilities to obtain the desired bandwidth of the passband. The proposed topology is used to design a wideband third order filt... View full abstract»

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  • Impacts of impedance mismatch on the performance of RF mixers

    Publication Year: 2011, Page(s):27 - 31
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (454 KB) | HTML iconHTML

    The impacts of impedance matching on the performance of a radio frequency (RF) front-end mixer are studied. A fully differential double balanced Gilbert cell mixer has been considered in this work. The matching requirements for the low noise amplifier (LNA) and local oscillator (LO) are investigated. A novel solution to use the LNA output capacitors as a matching network is presented. Effects of t... View full abstract»

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  • Varactor-based frequency-tuned microwave quarter-wavelength side-coupled ring resonator

    Publication Year: 2011, Page(s):32 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (686 KB) | HTML iconHTML

    A center-frequency-tuned microwave quarter-wavelength side-coupled ring resonator based on the varactor diodes is presented. Four identical varactor-based tuning circuits are applied at every entry point of the coupled-lines in the ring resonator to give capacitance effects and cause an increment of electrical length and thus results in tuned center frequency at the desired frequency band. The com... View full abstract»

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  • The design and development of CDMA450 repeater

    Publication Year: 2011, Page(s):36 - 39
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (233 KB) | HTML iconHTML

    CDMA2000 cellular technology utilizing the 450MHz band is recognized as CDMA450. CDMA450 has coverage advantage when compared to other 3G mobile networks since using the lowest band of UHF spectrum. Although CDMA450 is capable to cover vast area especially in the low density populated areas, the issues regarding shadowed and dead spots are to be anticipated. This paper firstly introduces the CDMA4... View full abstract»

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  • Design of microstrip patch array antenna using rectangular Barium Strontium Titanate (BST) ceramic

    Publication Year: 2011, Page(s):40 - 43
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB) | HTML iconHTML

    A microstrip patch antenna formed from Barium Strontium Titanate (BST) ceramics has been investigated. The Computer Simulation Technology (CST) Microwave Studio is used for the simulation. We measured the gain and directivity of antennas with four, six and eight elements of BST array antenna and found that the gain of an eight elements of BST array antenna was enhanced by about 0.06 dBi of directi... View full abstract»

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  • Versatile voltage-mode quadrature oscillator circuit using DDCCs

    Publication Year: 2011, Page(s):44 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (270 KB) | HTML iconHTML

    This paper presents a new versatile voltage-mode quadrature oscillator circuit using three differential difference current conveyors, two grounded capacitors and three grounded resistors. Unlike the previously reported quadrature oscillator, the proposed circuit can realize a quadrature oscillator and a universal filter without changing the circuit topology. When the circuit works as a quadrature ... View full abstract»

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  • A review on pairing based cryptography in Wireless Sensor Networks

    Publication Year: 2011, Page(s):48 - 51
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (261 KB) | HTML iconHTML

    This paper, presents a detailed review of the works on pairing algorithm and its application in Identity-Based Encryption (IBE) scheme for Wireless Sensor Networks (WSNs). WSNs device is a device that resource constrained, limited memory storage and open to a third party attack. This issue has been widely recognized and much research has been in this area, improving the hardware and the software. ... View full abstract»

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